Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b9a2e48961201b…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 09:13:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34692eb65a3733d8a90513f60910ca01 SHA-1: b5e7978bd7c523211d53cefc103b404b99230546 SHA-256: 80b9a2e48961201bb79c9181903026cf6d893c5f0c1fd0800d4452de1fbbce06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "free generators" or "game hacks". The primary redirect URL is https://netcdn.xyz/app/406889139/apk-coin-master-hack-game-hack, which likely serves as a lure to download further malicious content or phish for user information. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/apk-coin-master-hack-game-hack In PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ae9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE9 25696 bytes
SHA-256: ae246a2520233508674d8008c4419c8b21830316fa94bfc3d0ea7dfa647f62d8
font_01_sfnt_off00008548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8548 17892 bytes
SHA-256: 10848dcb94fa8ef52647dff51f313a82fe0a75c442c4a6ae41e72789ca7f1d9e

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